Home / 1,636.08-2,257.74-890.02

Finding the Fourth Proportional to 1,636.08, 2,257.74 and 890.02

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Solution

The fourth proportional to 1,636.08, 2,257.74 and 890.02 is: 1,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.08 : 2,257.74 = 890.02 : x
  2. Step 2: Convert to fraction form
    1,636.08/2,257.74 = 890.02/x
  3. Step 3: Cross multiply
    1,636.08x = 2,257.74 × 890.02
  4. Step 4: Simplify right side
    1,636.08x = 2,009,433.75
  5. Step 5: Solve for x
    x = 2,009,433.75/1,636.08
  6. Step 6: Final answer
    x = 1,228.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.